[New-bugs-announce] [issue18913] ssl._ssl._test_decode_cert seems to leak memory with certain certificates in Python 2.6
Matěj Stuchlík
report at bugs.python.org
Tue Sep 3 13:46:41 CEST 2013
New submission from Matěj Stuchlík:
Doing 'valgrind --suppressions=Misc/valgrind-python.supp ./python Lib/tests/test_ssl.py' I'm getting:
==322== LEAK SUMMARY:
==322== definitely lost: 32 bytes in 1 blocks
==322== indirectly lost: 392 bytes in 16 blocks
==322== possibly lost: 1,617,191 bytes in 1,052 blocks
==322== still reachable: 4,068,239 bytes in 3,201 blocks
==322== suppressed: 0 bytes in 0 blocks
I managed to reduce that to a shorter reproducer:
"""
import os
import ssl
NULLBYTECERT = os.path.join(os.path.dirname(__file__) or os.curdir, "nullbytecert.pem")
p = ssl._ssl._test_decode_cert(NULLBYTECERT)
"""
where NULLBYTECERT is the cert introduced in issue18709.
Python 2.7 does not leak like this, and the PySSL_test_decode_certificate function looks the same there as in Python 2.6, so I assume it's something else that does the actual leaking.
----------
components: Extension Modules
messages: 196837
nosy: sYnfo
priority: normal
severity: normal
status: open
title: ssl._ssl._test_decode_cert seems to leak memory with certain certificates in Python 2.6
type: resource usage
versions: Python 2.6
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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18913>
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